The AquaLink Pool Digital Assistant (PDA) brings the power and flexibility of a control system to the palm of your hand. Designed for wireless use in a backyard environment, the AquaLink PDA packs a powerful pool and spa control system with control of up to eight auxiliaries into an attractive and easy to use, compact, water resistant handheld remote. The real measure of a control system is not how large and complicated it is, but how compact and easy to use. Spend your time enjoying your pool and spa, not dealing with the responsibilities of maintaining it. The AquaLink RS does that work for you. With built-in features like automatic heater cool down, self monitoring freeze protection, and pool cleaner safety delay, the AquaLink RS virtually eliminates any concerns about equipment operation. Plus, all AquaLink RS control systems are backed by some of the strongest and most inclusive warranties in the industry. So relax and rest assured that your investment is protected and everything is set just right. The AquaLink RS has it all under control!